Chicago ? The Chicago Bulls are starting over. Again.

Bill Cartwright became the latest casualty in the Bulls’ seemingly endless rebuilding project, fired Monday after a 4-10 start. The team that began the season with such high expectations — maybe even the first playoff run since the dynasty days — looks like so many other versions of the HorriBulls.

“There’s no question that this team has underachieved, and probably for many reasons. Is it a coaching problem? I don’t think so,” interim coach Pete Myers said in Dallas, where Chicago plays the Mavericks tonight.

“These kids got to tie up their shoestrings a little tighter,” Myers said. “I told the guys today that it’s time for you all to pull that mirror out now. We’ve changed coaches, now you guys are going to take the heat. Now you have to stand up.”

If they don’t, more changes are likely. Trade rumors already were swirling around the team, with talk during the weekend of a deal with Toronto for Jalen Rose.

While that trade hasn’t happened, general manager John Paxson has made it clear he was not happy.

“The team is underperforming and we have to find ways to win, period,” Paxson said. “I am not satisfied with the team’s start this season and changes have to be made. This represents the first change, but not necessarily the last.”

Chicago has been abysmal since the Michael Jordan dynasty was blown to bits after winning its sixth NBA title in 1998. The Bulls have lost 292 games since, and have started and scrapped several rebuilding plans along the way.

But this was supposed to be the year everything turned around. Chicago finished 30-52 last year, a nine-game improvement.